I think I have decieded on my set up...now I need to figure out the proper fuel management.....I am going with the V2 CAI set up, with A32 MAF, and 370cc injectors. What am I going to need on the fuel side to make this system run effectively and efficiently? I have a 98 so if I am correct the JWT ECU is not an option for me (let me know if I am wrong)...please let me know what kinda fuel management setup you guys would run with this setup. Thanks
Carson

 

http://forums.maxima.org/showthread.php?t=270939

 

ok I read the whole thread....and what I get from this, is that by using the 370mm Z injectors and a Z32 MAF then you dont really need any further fuel management, other than possibly a SAFC....though it not really proven yet. Has any one proven this set up yet using the stock ecu?

 

What do you mean by proven? If you mean a dyno session where afr was monitored, the answer is no. I might be doing that in the not too distant future, though. I'm waiting for a Fidanza flywheel to install before I dyno again.

My experience running the 370's, Z32 maf sensor and oem A32 ecu is that the car ran perfectly in partial throttle situations. I went to WOT up to about 9 psi and detected no detonation and egt's were around 1450F, which is pretty normal for my car. That was with a 5 speed ecu, which I only had in the car for that one drive.

Later, I put in my original auto ecu and drove it like that for about a week. It drove perfectly at partial throttle but would ping at WOT after the engine was heat soaked. I'm going to put the oem 5 speed ecu back in and see if the pinging was an auto ecu issue or due to heat soak.

At any rate, this setup definitely needs some dyno tuning for safety's sake and a means to adjust the afr at WOT.

Also, from what I've read in the forums, you can run a JWT ecu in a 97-98 but you get a CEL. I don't know what code the ecu throws, though.

 

I will look into the JWT ECU a little more but this sound promising, since my car is manual, so I already have the 5 speed ecu....and you said that you had no problems at partial throttle...did you ever go WOT? I have read in past post that people were having some bogging at WOT with this set up....and if I did get bogging, I could probably fix this with a AFC right?

 

I don't mean to be disrespectful, but if you reread what I wrote, you will see "WOT" a couple of times.

I didn't experience bogging at WOT, rather the opposite problem. That is, indications of leanness.

 

ok, sorry about that, you are right, I was reading too fast. Let me know when you have done some more research on this set up...I am very interested in it...I am just wondering if it will hold up. And also with this setup I am assuming that you are running a walbro fuel pump?

 

Yes, but with the 370 cc/min injectors running at oem fuel pressure, the stock fuel pump should be well able to deliver sufficient fuel. Not absolutely sure, but I'd be very surprised if the oem fuel pump wasn't able to deliver all the fuel the 370's could handle at 43 psi, and that's about 420 hp worth.